Rayon fibers are obtained from .......

Consider the following statements:
Statement-$I$: Nylon $6$ is a condensation copolymer.
Statement-$II$: Nylon $6, 6$ is a condensation polymer of adipic acid and hexamethylenediamine.
The correct answer is:

Select the incorrect option for the following polymer:

Match List-$I$ with List-$II$:

List-$I$ (Polymer)	List-$II$ (Used in)
$A$. Bakelite	$I$. Radio and television cabinets
$B$. Glyptal	$II$. Electrical switches
$C$. $PVC$	$III$. Paints and lacquers
$D$. Polystyrene	$IV$. Water pipes

Choose the correct answer from the options given below:

Which of the following is Teflon?

If a polythene sample contains two monodisperse fractions in the ratio $2:3$ with degree of polymerization $100$ and $200$,respectively,then its weight average molecular weight will be